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| author |   Jérôme Glisse <jglisse@redhat.com> | 2019-05-13 17:20:01 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 09:47:48 -0700 |
| commit | a3e0d41c2b1f86b483b202d642140d8b86d677ca (patch) | |
| tree | 609fcbfddd505301c81e8922b7cc50e45bf854ef /Documentation/conf.py | |
| parent | mm/hmm: improve and rename hmm_vma_fault() to hmm_range_fault() (diff) | |
| download | linux-dev-a3e0d41c2b1f86b483b202d642140d8b86d677ca.tar.xz linux-dev-a3e0d41c2b1f86b483b202d642140d8b86d677ca.zip | |
mm/hmm: improve driver API to work and wait over a range
A common use case for HMM mirror is user trying to mirror a range and
before they could program the hardware it get invalidated by some core mm
event. Instead of having user re-try right away to mirror the range
provide a completion mechanism for them to wait for any active
invalidation affecting the range.
This also changes how hmm_range_snapshot() and hmm_range_fault() works by
not relying on vma so that we can drop the mmap_sem when waiting and
lookup the vma again on retry.
Link: http://lkml.kernel.org/r/20190403193318.16478-7-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/conf.py')
0 files changed, 0 insertions, 0 deletions